GrimmSpeed 38/40mm V-Band External Wastegate Uppipe - 2-bolt -WRX 2002-2014 WRX / STI 2004-2019 / More
NOTE: "GRIM-059002" & "GRIM-059001" have been discontinued by the manufacturer.
An External Wastegate (EWG) allows exhaust gases to be diverted prior to entering the turbo; creating a quicker turbo spool. The GrimmSpeed™ EWG has a larger diameter than a stock internal wastegate; this allows the exhaust gas to be released faster, which improves boost control, maintains maximum boost longer in the rpm range. All of these together will give you a 10-40 HP INCREASE. Moving the wastegate out of the turbo relieves the turbo from the massive amounts of turbulence that the stock internal wastegate creates.
Not CARB Legal
This is a 2-Bolt flange.
Note: Wastegate is not included.
The entire EWG Up-Pipe is made of 304 SS(flanges, flex, tubing) and has a pipe-wall thickness of 14 Gauge, this is the most "heavy-duty" pipe you will find. Many other pipes use cheap thin steel and are marketed as "super lightweight", not us. The inlet size is 1.92" and the pipe tapers down to 1.72” which acts as a funnel as it moves into the turbo allowing for the smoothest transition and best air-flow quality. The one of a kind Triple Layer Flex Joint is not located in the bend, which adds to the life expectancy of the flex section. Our outlet size is a perfect match for the most common stock location turbos allowing for a smooth transition into the turbo.
The GrimmSpeed™ EWG Up-Pipe Kit fits more downpipes than any other EWG Up-Pipe on the market.
|Flange Thickness :||13mm|
|Includes Catalytic Converter :||No|
|Installation Hardware Included :||Yes|
|Piping Coating :||No|
|Piping Flex Joint :||Yes|
|Piping Material :||304 Stainless Steel|